As said there are a number of entries in the archives which a search will find, I bought an IsatPhone Pro a couple of years ago and it travels everywhere with me, cost about $600 and I fut a few prepaid credits on it when I travel, I found it much easier than trying to fit something else to the car.
The satphone also does 000 calls, SMS and emails. Also if the family want to contact me they can sens a free message to my satphone from the IsatPhone website. I prefer full 2 way communications in case of an emergency.
Since they realigned the Inmarsatallite a few years ago the signal is strong as and broadband is available,,,,at a cost.
Cheers
Trevor